Electrical circuit and device.



No. 818,169. I PATENTED APR. 17.; 1906:.

R. J. HEWETT; J

ELECTRICAL CIRCUIT AND DEVICE.

APPLICATION FILED JUNE 2. 1905.

2 S HEETS'SHBET 1.

STGTIOH C STaflan B WITNESSES: f INVENTOR.

ATTORNEY No. 818,169. PATENTED APR.17, 1906.

R. J. HEWETT. ELECTRICAL CIRCUIT AND DEVICE.

APPLICATION FILED JUNE 2. 1905.

2 SHEBTS-SHEET 2.

INVENTOR I IT I ATES PATENT {OFFICE} ROBERT-@LHEWETT; or WESTFIELD, JERSEY, assienon TO THE y ii sieNAL COMPANY, A' CORPORATION or MAIN eLE'cTmc'A CIRCUIT AND DEVlCE.

m n a, Specification of To aLZZ whom it may concern;

Be it known that I, ROBERT J. HtwEiT, .a

New Jersey, ave, invented certain newa'nd .iuseful'lmprovements in Electrical Gircuits and Devices-,of which the followingis aspect- This invention relates to-improvements in electriqalcircuits and-devices, and especi all such as are adapted forusein electric signa '1 in systems.-

7 he invention seeks to provide a magnetic device or relay which when connected in a track-circuitwilleffect an economy in the current" consumption usedto energize the said-inagnet'device; I invention also seeks to provide a signaling s'ystem said, magnetic devices'constitute a'feature.

The magnetic-lde'vice or relay may be employed as a track relay, in :which case it v would be generally located at the entering and of a" track-sectioniand associated withsignalseither. working on the normal clear or, normal dangerprinciple. It may also be employed. as a v clearing-relay, in which. case -1t would generally be locatedl at the exit end ofthe track-section and associated'with signals working on-the normal danger principle. In the accompanying drawings, .forming partcffirthiss ecification, Figure 1 is a dia gram of a rai road ,si aling system employing the invention. ig.!2 is a diagram of another system employing the invention, this systemusing home and distant signals and traclerelaysewith polarized 'armatui'es;

' Refer'ringnow more particularly to the specific circuits" and devices as shown in Fig. '1,'-1-, 2:,=-,3, and tare insulated track-sections.

Sections 1; and 2 constitute the blockguarded bythei-sig'nal 5;;andi sections 3 and 4 constitutethebloclcgi arded by'signal v6.1 The signals work on the normal clear principle. tThe track-sectionsare; provided with t-raek re-i lays located, respectively, at stationsA 28, C, itlHliDii -Each of thesetrack-r'elays on pris'es-..two, magnet-coils connected in the cir- 1 cuit of its-track-sect-ion and associated wk th a, circuit changer, whereby the co ls are:

' changed from-a connection oflow resistance tova connection ofhigh resistance and; he pe-j verse, this being preferably eiiccted by shift- Letters Patent. Patented. April 17, 19cm hpplicationfile'l June 2,1906. Saria1No.263,5(l i).

L'multiple connection and the reverse. I These magnetic" devices operate circuit-controllers, a circuit-controllerrmoving from its pick-up. position to its hold-up position when its mag: net device isin .the'high resistance connection and being kept in its hold-upposition- -when this magnetic device is in low-resistance connection. .Thus full current energy will 7 and- 8 are the magnet-coils at station A."

One side of coil 7 is connected'with wire '9,' leading from track-rail of section 1. The otherfside of coil 7 is connected to contacts 10 and 11. Coil 8 is connected on one side to wire lib leading t0 the other track-rail of section '1', and the other side of this coil is connected to moving contact 13',1-Which works between contact 11 i-and'jcontact 14,-swhich latter is connected to wire 9. Moving contact I5 is connected to wire 12 and Works to and from contact 10. Moving contacts 13 and 15 constitute the circuit-changer associated with coils 7 and 8. The opposite ends of the rails of section '1 are connected through battery 16 and circuit-controller 17. Magnet-coils 7 and 8 operate circuit-controller 18, included in the circuit withhattery 19 and'r'nagnet 20. Magnet 20 represents the motor or' other operating or'controlling device for signal 5. The circuit-changer is con.- nected for operation with'signal -rod 21; but it may be operated in any suitable manner. In the normal condition of the circuits and devices as shown at station A the signal is "held at safety b'ymagnet 20,Whose circuit isclosed .at circuit-controller, 1S. This circuit-controller 18 is therefore in its hold-up position. Magnet coils 7 and S are con nected in series with their track-circuit. so that the output of battery 16 is thereb "reduced to an amount merely sufficient to safely hold circuit-controller; l8 inils hold-up position. This vcircuit may I be 'tracedff'fronif ;wire 9 through coil' 7, contacts @lli fand '13} coil 8, and. wire12 through'ther'ailsand bat-1 fterv 16; Then a train"enters'sectionQLfitl fi- II TT S, to drop to itsQpic-k-hp position. This opens the circuit of fniagri'et go; and puts; .the signal to dangerIbehindthetrainQ The be employed to move the circuit-controller circuit-changer shifts its position so as to ing the coils from a series connection to'a;

change the connection of coils Erase Shem a. series connection to a .mulitple connection. This change'in t he connectionsis shown at station C. The circuit for coils then flow from Wire 9 through coil "-7, contacts andilfi to wire 12,.and also from wire 9 through contacts 14and 13, coil 8 to wire 12, and throu lithe rails. When the train passesout of t eblock guarded by sig naL5,coils 7 and' 8 will beenergized while in their Inulti and return signal 5 to safety.

suitable manner.

At station C the track-relay 22, circuit-. changer 23, circuit-controller 24', signal-magnet 25, &c., are duplicates of the correspon mg parts shown at station A, the position of the parts being altered-to correspond to the position of signal 6, which is at danger be:

cause ofthepresence of the train represented. .in sect on 4. At station Ccircuit-controller 24.1s in its'pick-up position and relay 22 is in its multiple connection.

, At station B the rela automatically works with its own circuit-c ranger, there be ing no signal at this point. Coil 2(i'is con nected on one side to Wire 27, leading to one rail, and on its other side to moving contact 28. 'Coil 29 is connected on one side to'wire' 30 leading to the other rail, and on its other si e to stationary contacts 31 and 32; Wire 27 is connected to moving contact 33, and wire 30 is connected-to stationary contact 34 When the rela is in its normal condition, as shown, the coi s are connected in series with their tI'ECkvClI'Clllt, which includes battery 35, and the circuit-controller 17 is'held in its hold-up position. At this time the circuit of the relay may be traced iroinwire 2? through coil 26, contacts 28 and 32, coil '29 to wire 30 and through therails. When the relay is de energized, circuit-controller 17 moves from its hold-up position to its pick-up position,

contacts 33 and 28 change their position, so as to connect the coils in multiple. cuit may then be traced from Wire 27 through coil 26, contacts 28 and 34 to Wire 30, also from Wire 27 through contacts and31 and coil 29- to wire 30 and. through the rails.v When a train passes out ofsection 2 ,coils 26 and 29'will be energized while in their Inul tiple or low resistance connection and move circuit-controller 17 from its pick-up to its hold-up position. At the same time they shift contacts 28 and 33 so as tochangethe' connect'ion of thecoils-from 'Inulitple to series It will be observed thatcontacts 28' and 33 have a picleup and a hold-up position as well as circuit-controller 17 and that these 7 and "8 will The cir erases contacts are operatedjbythe 'coils under the same condition as is circriitcontroller 17.

' At station D the track-relay isshown in associationhvith sliding" contacts arranged so that the several brokeniin a predetermined sequence.- 36 is'..connected on one side .'th track-wire contacts may be made and Coil 3? andon its other side by wire 38 with movin contact 39. Coil 40 is connected on one si ejtzgithrtrack-vvire 41and on its other side manscaciwa contacts 42 and 43; Wire 38 ifs-connected with moving contact 44,,wire

4111s" connected with. stationary contact 45, and Wire 373k connected with moving contact 46. 'ontacts 47 and 48 constitute the circuit-controller connected with wiresjae and 51) of track-circuit for relay 22. MOViIlg contacts 44 and 46, 4S and 39are carried by- When a train'is in section 4, as

armature 51. indicated, inagnet coils 36 and 40 will be deenergized, and therefore connected inmultiple-or 111M181? pick-up connection. At this time the connection oi: the coil maybe traced from track wire 37, coil 36, wire 38, contacts "39 and 45 to wire 41,, also from Wire 37, contacts 46 and 42, coil 40 to wire 41 and through the rails. Armature 51 and its moving contacts are thus in their ick-up position, and contacts 47and 48 will e openIso that signal 6 will be held at danger. When the train moves out of section 4 and coils 36 and 40 are energized in their multipleconDectionQarma ture 51 is moved from its pick-up to'its holdup position. This closes contacts 47;

so that signal 6 is returned to safety."" It'also shifts the contacts of the circuit changer so that the coils are changed fromniultiple to seriesconnection, the circuit at this time being traced from wire 37 through coil 36, contacts 44 and 43, coil 40, and wire 41 through the rails. Contacts 42, 43, '45; and 47 are made in the forrn of. springs, contacts 42. and 47 having aY-bias inward or toward the coils: This arrangement makes the contacts slide upon each otherg so ias to insure good electrical connection, and contacts 5 and 39 may be madetoremain in contact with their contacts 42 and e until contacts 44 and 48 havesafely made, or substantially so, connection with their contacts 43 and-47, lhe momentum oi the armature '51 in moving to: ward the coilscan be relied upon to carry it 11g) and closeg'the front contacts even though t e back contacts open somewhat inadvance.

Spring-contacts 42 and 45 may be adjusted so thatthere may be no interval of no current or that the interval of no currentimay be negligible. These. springslnay be adjusted .so that thefback contact 39 will openslightly in advance of back contact 46, and theic'losing of front contact 44 will follow the opening of back contact 46. In'otherWorQs,'t e lift .ing of the armature causes contact 39' 'td open, then contact 46 opens, and thencoiitact 44 closes.

and 1' circuit .-.controller 66.

it will not be necessary to trace the complete operation of the circuit as a train passes over the sections 1, 2, 3-,.and 4 of the track. This .Will be radily understood from What has already been explained.

' It be observed'that themovement of the circuit-changer from series to multiple connection of the coils is initiated when the coils are denergized in series, and the move ment of the circuit-changer from multiple to series connection is initiated when said coils are energized in multiple. served that when said coils are energized in multi le they initiate the movement of the sigma 'toclear position andwhen they are deenergized .in series they initiate the movement of the signal to danger osition.

In Fig. 2 the track isdivi ed into sections or blocks 52, 53, and 5 55 and 56 are home and distant signals located at the entering end of block 52. 5'7 and-58 are home and distant signals'located at the entering end of block 53. 59 and are home and distant 'signals'located at the entering end of block 54. Associated with signals 55 and 56 are magnet coils 6'1 ,hnd 62,- provided with a circuit-changer 63, These coils and their circuit-changer are connected their trackcircuits with battery 64 in exactly the same Way as the coils and circuit-changerat station A in Fig. 1 and need not be described in detail.

These magnct coils 6]. and 62 have a neutral circuit-controller and polarized The former controls the home signal through magnet 67 and b'qth together control the distant signal through magnet 68. The circuit of magnet 67 extends from battery 69 through armature 65, Wire 7 O, magnet-'67, and Wire 71 to-battery. The circuit of magnet 68 extends from. battery 69 through armatures 65 and 66, Wire 72, magnet 68, and Wire 71 to battery. Battery 64 is provided With pole-changer 73, which, as showr may be 0 erated'by the operatingrod of si nal 57.. Track-relay 74 is provided with circuit-changer 7 5, neutral and polarized circuit-controllers 7 6 and 7 7, signalmag-- nets 78 and 79,.and with track-battery S0 and pole-changer 81, all heir-g connected and operated in precisely the same Wayne the corresponding devices for block 52. Circuit changer 63 is operated by rod of signal and circuit-changer 75 is operated by red of signal 58. g

'The operation of the device and circuits shown in Fig. 2 is as follows: A train entering block 52 shunts coils 61 and 62, thereby causing circuit-controllers 65 and 66 to move from their hold-up to their pick-up position and put signals 55 and 56 to danger. Circuit-changer 63 shuts so as to change the connection ofcoils 61 and 62 from series to multiple. When a train enters block 53, signals 57 and 58- are put to danger in the same Way and the circuits and devlces open It will also be obto the preceding signals.

ated iii precisely the same Way as with rererence to block 52. The movement of signal 57 to danger shifts pole-changer 73 so as to energize coils 61 and 62 in theirmultiple magnet 67 and puts the home signal 55 to safety. When the train passes out of block 53 and into block 54, home and distant signals 59 and 60 go to danger behind the train in a manner already described, and the circuit and devices associated With these signals operate in the same Way with reference Home signal 57 returns to saiety in the same Way as home signal 55 returned to safety and polechanger 73 moves back to its former position, thereby causing polarized circuit-controller 66 to move from its pick-up to its hold-up position. This closes the circuit through magnet 68 and puts distant signal 56 to safety, thereby shifting the circuit-changer 63 and changing the connection of coils 61 and 63 from multiple to series. As the train proceeds its operation upon the signals and their associated devices continues as already described.

What I claim, and desire to secure by Letters Patent, is-

l. The combination of a circuit, with magnetic means connected With' said circuit; a circuit-changer connected With said circuit and act to change the connection of said magneticmeans from one of low resistance to one of high resistance and the reverse; and a circuit-controller controlled by said magnetic means and arranged to be picked up during the low-resistance connection of said magnetic means arid to be held up during its higlnresistance connection.

The combination of a circuit, with magnetic means connected with said circuit; a circuit-changer connected with said circuit and. acting to change the connpctibn of said magnetic means from one of low resistance, to one of high resistance and the reverse; and a circuit-controller controlled by said magnetic means and arranged to be picked up during the low-resistance connection of said magnetic means and to be held up during its IIU high-resistance connection, the position ofduring-its high-resistance connection 4. The combination of a track' circuit with.

picked during the low-resistance connec- .tion of said magnetic means and to be held up 'a'signal magnetic means connected with said circuit a circuitchanger conn e eted with sald circuit and acting to change the connection of said magnetic means from one of 10W re sistance to one of high resistance and the re-'- 'verse;. and a circuiecontroller for the signal and controlled by said magnetic means and arranged to be picked up durlng the low-resistance connection of said magnetic means its higlnresistance arranged to be'picked up during the low-resistance connection of said magnetic means and to be held up during its higheresistance connection, the position of said circuitchange'r being dependent ,upon the energization "and denergization of said magnetic means. p

6.The combination of a trackc1rcu1t,W1th

a signal Jmagnetic means connected withsaid'circuit; a circuit-changer connected with said circuit and acting tochange the connection of said magnetic means from one of low resistance to one of high resistance when said magnetic means are energized and to reverse the connection when said' magnetic meansare' denergiz'ed'; and a circuit-controller for the signal and controlled by said magnetic means and arranged to be picked up during the low resistance connection of. said magnetiei means and to be held up during its high-resista'rice connection.

'7."Th'e combination of a track-circuit, with a signal; magnetic means connected with said circuit ;'a circuit-changer connected with said circuit and operated b y themovement of the signal'and acting to change the connec- "tioh of said'magneticmeans from one of low resistancejt'o'one oi high resistance and the 'reverse; and a"-circuit-controller controlled b v said ma 'neticmeans and arranged to be packed 'up' d uri'n'g the low-resist'ance connection of said magnetic means and to be held up during 1ts1h1gh-res1stance connection.

8. The combination of a track-circuit, with a signal; i'n'agnetio means "connected with Sfilfl circuit a circuit-eh-anger c on neeted with s'ai'c'l'cir cuit'and operated by the 1no\ ement of' .thdsigh'al andactmg to change tlie conned 1011101 saidmagnet'ic meansfrom oneoi low resistance to' one of high resistance whensaidmagneticmeans areenergized and to reverse it-he" connection when said magnetic means males are deenergized; and a ci'euit controller con- .trolled by said ma to be picked up heldup during its high-resistance connection. 9.. The combination of a circuit, with two ma net-coils a circuit-changer connected in one position it connects said coils in series in multiple and held up when'saidcoilsare in said coils are energized in multiple.

11. The combination of a trackcircuit, .with' a signal; twomagnet-coils; andfa" cir cuit-changerarranged to connect said coils in mot ement of the signal to clear position and ries and in multiple in the circuit; a circuit controller for controllingthe position of the ries.

a circuit-changer connectedwith saidcircu t magnetic means and to be held up during a netic means. i

magnetic means connected with'said circuit; a circuit-changer connected with 'said circuit and acting to change the connection of said and when in its other position it connects" said coils in multiple and a circuit-controller 1 arranged to be picked up when saidcoilsare up when said coil'sarein arranged to be picked up when said coils are series and in multiple in the circuit, said coilswhen energized in multiple imt ating the when denergized in series initiating themovement of the signal to danger position.

12. The combination of a track'-"circuit," with a signal; two magnet-coils;'a circuit changer arranged to connect said-coils in se- 1 etic means andarran'g'ed urmgthe low'- resistance connection of said magnetic means and to be wit said circuit and so arranged that when 3 ma net-coils; a circuit-changerconnected wit said circuit and so arranged that when" and when in its other positionit connectsseries, the movement of said'circuit-changer-' to its last-mentioned positionbeing initiated when said coils are denergized in series, and the movement of said circuit-changer to' i'ts' first-mentioned position being initiated when.

signal and arranged to be'jpi'cked when said coils are energized'in multiple-andfto be" .held up when said coils are energized inse" w, 5 i 5 1 g.

13.' The combination ofja 'circ iut ,-'wi'th magnetic means connected with said circuit and acting tochange the connection of' sai'd-" magnetic means from one of low resistance to one of high resistance andjthe reverse; and af circuit-controller controlledby said mag netic means and arranged to be'pick'edup" during the low-resistance connect-ionof said its highresistance connection, said circuit-' chan er be ng directly operated by said mag 14. The combination of" afcircuit; with '1 :ma'gnetic means from oneof low-resistance to one of highresistance and'the-reverse;' and.'

a circuit-controller controlled by said ma 13 5 netic means and arranged to be picked up when said coils are thereafter energized.

1 with a signal; two magnet-coils; a circuittion when said magnetic meansare thereafter in multiple and held .movement of the signal to danger position,

during the low-resistance connection of said magnetic means and to be held up during its high-resistance connection, said circuitchanger being directly operated by said magnetic means and moved to the low-resistance connection when said magnetic means are deenergized and to the high-resistance connecenergized. I a

15. The combination of a circuit, with two ma netic coils; a circuit-changer connected wit said circuit and so arranged that when in one position it connects said coils in series and when in its other position it connects said coils in multiple; and a circuit-controller arran edwo be picked up when said coils are up when said coils are in series, said circuitwhanger being operated directly bysaid magnet-coils and movedto multiple connection when said coils are de energized and moved to series connection 16. The combination of a track-circuit, with a signal; two magnet-coils; and a cir-- cuit-changer arranged to connect said coils in series and in multiple'in the circuit, said coils when energized in multiple initiating the movement of the signal to clear position and when deenergized in series initiating the said circuit-cl1anger being operated directly by said magnet-coils and moved to multiple connection when said coils are denergized and moved to series connection whensaid coils are thereafter energized.

17. The combination of a track-circuit,

changer arranged to connect said coils in series and in multiple in the circuit; a circuitcontroller for controlling the position. of the multiple connection when said coils are signal and 'arranged to be picked up when said coils are ener ized inrmultiple and to be held up whensai coils are energized in's'e: ries, said circ1it hanger being operatedodirectly by said magnet-coils and'movedato eenergized and moved to series connection when said coils are thereafter ener 'ze'd.

18. The combination of a trac -circuit,

with home and distant signals; twomagnete coils; a circuit-Chan er arranged to connect said coils in multiple and in series in said track-circuit a signal-circuit for the home signal having a circuit-controller with a neutral armature operated by said ma net-coils; a signal-circuit for the distant signa having a circuit-controller with a polarized'armature operated by said magnet coils; a pole changer in said track-circuit.

19. The combination with a track-circuit having two magnet-coils; a signal; a signalcircuit for the signal having two circuit-controllers, operated by said coils,'one of said cir cuit-controllers being moved from its pick-up to its hold-up position when said coils receive current of a given characteristic, and the other circuit controller being moved from its pick-up to its hold-up position whensaid co ls receive'current of a diflerent character istic; means for varying the characteristic of the current for said coils; and a circuitchanger connected with said coils and actmg to connect said coils in a low-resistance connection to pick up said circuit-controllers,

and to connect said coils in a high-resistance connection to hold up said circuit-controllers. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

- ROBERT J. HEWETT.

Witnesses:

. NroHoLAs M. GooDLETT, Jr.-,

W. H. LANE. 

